ECU INFINITI QX4 2001 Factory User Guide

SAT940A
d. Install band servo retainer onto transmission case.
SAT943A
4. Install rear side clutch and gear components.
a. Place transmission case in vertical position.
SAT944A
b. Slightly lift forward clutch drum assembly. Then slowly rotate it
clockwise until its hub passes fully over clutch inner race inside
transmission case.
SAT945A
c. Check to be sure that rotation direction of forward clutch
assembly is correct.
SAT946A
d. Install thrust washer onto front of overrun clutch hub.
IApply petroleum jelly to the thrust washer.
IInsert pawls of thrust washer securely into holes in over-
run clutch hub.
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ASSEMBLY
Assembly (1) (Cont'd)
AT-341

SAT952A
j. Install needle bearing onto rear internal gear.
IApply petroleum jelly to needle bearing.
SAT953A
k. Install bearing race onto rear of front internal gear.
IApply petroleum jelly to bearing race.
ISecurely engage pawls of bearing race with holes in front
internal gear.
SAT954A
l. Install front internal gear on transmission case.
SAT546J
5. Install rear extension assembly on transmission case (2WD
model only).
a. Install revolution sensor on rear extension.
b. Install rear extension gasket on transmission case.
c. Install parking rod on transmission case.
d. Install parking gear and needle bearing.
IInsert rear extension assembly into place while holding
parking gear and needle bearing by hand.
SAT216B
6. Install output shaft and parking gear (4WD model only).
a. Insert output shaft from rear of transmission case while slightly
lifting front internal gear.
IDo not force output shaft against front of transmission
case.
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ASSEMBLY
Assembly (1) (Cont'd)
AT-343

SAT967A
b. Make sure needle bearing is on front of front planetary carrier.
IApply petroleum jelly to needle bearing.
c. Make sure needle bearing is on rear of front planetary carrier.
IApply petroleum jelly to bearing.
IPay attention to its direction Ð Black side goes to front.
SAT969A
d. While rotating forward clutch drum clockwise, install front plan-
etary carrier on forward clutch drum.
SAT970A
ICheck that portion A of front planetary carrier protrudes
approximately 2 mm (0.08 in) beyond portion B of forward
clutch assembly.
SAT971A
e. Make sure bearing races are on front and rear of clutch pack.
IApply petroleum jelly to bearing races.
ISecurely engage pawls of bearing races with holes in
clutch pack.
SAT973A
f. Install clutch pack into transmission case.
ASSEMBLY
Assembly (1) (Cont'd)
AT-346

SAT993A
f. Install oil pump assembly.
IInstall two converter housing securing bolts in bolt holes
in oil pump assembly as guides.
SAT994A
IInsert oil pump assembly to the specified position in
transmission, as shown at left.
SAT114B
5. Install O-ring on input shaft.
IApply ATF to O-rings.
SAT397C
6. Install converter housing.
a. Apply recommended sealant (Genuine anaerobic liquid
gasket, Three Bond TB1215, Locktite Part No. 51813 or
equivalent) to outer periphery of bolt holes in converter hous-
ing.
IDo not apply too much sealant.
SAT158G
b. Apply recommended sealant (Genuine anaerobic liquid
gasket, Three Bond TB1215, Locktite Part No. 51813 or
equivalent) to seating surfaces of bolts that secure front of
converter housing.
c. Install converter housing on transmission case.
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ASSEMBLY
Assembly (2) (Cont'd)
AT-351

SAT006B
c. Place control valve assembly on transmission case. Connect
solenoid connector for upper body.
d. Install connector clip.
SAT353B
e. Install control valve assembly on transmission case.
f. Install connector tube brackets and tighten bolts A and B.
ICheck that terminal assembly does not catch.
Bolt symbolmm (in)
A 33 (1.30)
B 45 (1.77)
SAT221B
g. Install O-ring on oil strainer.
IApply petroleum jelly to O-ring.
h. Install oil strainer on control valve.
SAT009B
i. Securely fasten terminal harness with clips.
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Assembly (2) (Cont'd)
AT-353

Joint Assembly (Final drive side)NBAX0019S03IReplace any parts of double offset joint which show signs of
scorching, rust, wear or excessive play.
ICheck serration for deformation. Replace if necessary.
ICheck slide joint housing for any damage. Replace if neces-
sary.
Joint Assembly (Wheel side)NBAX0019S04Replace joint assembly if it is deformed or damaged.
ASSEMBLYNBAX0020IAfter drive shaft has been assembled, ensure that it
moves smoothly over its entire range without binding.
IUse NISSAN GENUINE GREASE or equivalent after every
overhaul.
SFA800
Final Drive Side (TS82F)NBAX0020S011. Install new small boot band, boot and side joint housing to
drive shaft.
Cover drive shaft serration with tape so as not to damage boot
during installation.
SFA397
2. Install spider assembly securely, ensuring marks are properly
aligned.
IPress-fit with spider assembly serration chamfer facing
shaft.
3. Install new snap ring.
SFA460BA
4. Pack with grease.
Specified amount of grease:
95 - 105 g (3.35 - 3.70 oz)
5. Make sure that boot is properly installed on the drive shaft
groove. Set boot so that it does not swell and deform when its
length is ªL
1º.
Length ªL
1º: 95 - 97 mm (3.74 - 3.82 in)
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FRONT AXLE
Drive Shaft (Cont'd)
AX-13

SFA443B
6. Lock new larger boot band securely with a suitable tool, then
lock new smaller boot band.
7. Install new plug seal to slide joint housing by lightly tapping it.
Apply sealant to mating surface of plug seal.
SFA800
Wheel Side (ZF100)NBAX0020S021. Install new small boot band and boot on drive shaft.
Cover drive shaft serration with tape so as not to damage boot
during installation.
SFA884
2. Set joint assembly onto drive shaft by lightly tapping it.
Install joint assembly securely, ensuring marks which were
made during disassembly are properly aligned.
SFA473BA
3. Pack drive shaft with specified amount of grease.
Specified amount of grease:
135 - 145 g (4.76 - 5.11 oz)
4. Make sure that boot is properly installed on the drive shaft
groove. Set boot so that it does not swell and deform when its
length is ªL
2º.
Length ªL
2º: 96 - 98 mm (3.78 - 3.86 in)
5. Lock new larger boot band securely with a suitable tool.
6. Lock new smaller boot band.
SFA887
INSTALLATIONNBAX00211. Apply multi-purpose grease.
FRONT AXLE
Drive Shaft (Cont'd)
AX-14

ComponentsNBAX0028
SRA756A
RemovalNBAX0029CAUTION:
IBefore removing the rear axle, disconnect the ABS wheel
sensor from the assembly. Then move it away from the
axle. Failure to do so may result in damage to the sensor
wires and the sensor becoming inoperative.
IWheel bearing does not require maintenance.
IIf growling noise is emitted from wheel bearing during
operation, replace wheel bearing assembly.
IIf the wheel bearing assembly is removed, it must be renewed.
The old assembly must not be re-used.
SAX002
1. Disconnect parking brake cable and brake tube.
2. Remove nuts securing wheel bearing cage with baffle plate.
SRA758A
3. Draw out axle shaft with Tool.
When drawing out axle shaft, be careful not to damage oil seal.
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REAR AXLE
Components
AX-19

ABS
DESCRIPTION...............................................................32
Purpose......................................................................32
Operation ...................................................................32
ABS Hydraulic Circuit ................................................32
System Components .................................................33
System Description ....................................................33
SENSOR.................................................................33
CONTROL UNIT (BUILT-IN ABS ACTUATOR AND
ELECTRIC UNIT)
.....................................................33
ABS ACTUATOR AND ELECTRIC UNIT....................33
G SENSOR (4WD MODELS ONLY)..........................34
Component Parts and Harness Connector
Location .....................................................................35
Schematic ..................................................................36
Wiring Diagram - ABS - .............................................37
ON BOARD DIAGNOSTIC SYSTEM
DESCRIPTION...............................................................41
Self-diagnosis ............................................................41
FUNCTION..............................................................41
SELF-DIAGNOSIS PROCEDURE..............................41
HOW TO READ SELF-DIAGNOSTIC RESULTS
(MALFUNCTION CODES)
........................................42
HOW TO ERASE SELF-DIAGNOSTIC RESULTS
(MALFUNCTION CODES)
........................................42
CONSULT-II ...............................................................43
CONSULT-II APPLICATION TO ABS..........................43
ECU (ABS CONTROL UNIT) PART NUMBER
MODE
.....................................................................43
CONSULT-II Inspection Procedure............................44
SELF-DIAGNOSIS PROCEDURE..............................44
SELF-DIAGNOSTIC RESULTS MODE.......................45
DATA MONITOR PROCEDURE................................46
ACTIVE TEST PROCEDURE....................................47
DATA MONITOR MODE...........................................48
ACTIVE TEST MODE...............................................48
TROUBLE DIAGNOSIS - INTRODUCTION..................49
How to Perform Trouble Diagnoses for Quick
and Accurate Repair ..................................................49
INTRODUCTION......................................................49
TROUBLE DIAGNOSIS - BASIC INSPECTION...........50
Preliminary Check......................................................50
Ground Circuit Check ................................................53
ABS ACTUATOR AND ELECTRIC UNIT GROUND.....53
TROUBLE DIAGNOSIS - GENERAL
DESCRIPTION...............................................................54
Malfunction Code/Symptom Chart.............................54
TROUBLE DIAGNOSES FOR SELF-DIAGNOSTIC
ITEMS.............................................................................56Wheel Sensor or Rotor ..............................................56
DIAGNOSTIC PROCEDURE.....................................56
ABS Actuator Solenoid Valve or Solenoid Valve
Relay ..........................................................................59
DIAGNOSTIC PROCEDURE.....................................59
Motor Relay or Motor.................................................61
DIAGNOSTIC PROCEDURE.....................................61
Low Voltage ...............................................................63
DIAGNOSTIC PROCEDURE.....................................63
G Sensor and Circuit .................................................65
DIAGNOSTIC PROCEDURE.....................................65
ELECTRICAL COMPONENT INSPECTION................67
Control Unit ................................................................68
DIAGNOSTIC PROCEDURE.....................................68
TROUBLE DIAGNOSES FOR SYMPTOMS.................69
1. ABS Works Frequently ..........................................69
2. Unexpected Pedal Action ......................................69
3. Long Stopping Distance ........................................70
4. ABS Does Not Work ..............................................71
5. Pedal Vibration and Noise.....................................71
6. Warning Lamp Does Not Come On When
Ignition Switch Is Turned On .....................................72
7. Warning Lamp Stays On When Ignition Switch
Is Turned On ..............................................................74
8. Vehicle Vibrates Excessively When ABS Is
Operating ...................................................................77
REMOVAL AND INSTALLATION.................................80
Front Wheel Sensor...................................................80
Rear Wheel Sensor ...................................................80
Front Sensor Rotor ....................................................81
REMOVAL...............................................................81
INSTALLATION........................................................81
Rear Sensor Rotor.....................................................81
REMOVAL...............................................................81
INSTALLATION........................................................81
G Sensor....................................................................81
ABS Actuator and Electric Unit..................................82
REMOVAL...............................................................82
INSTALLATION........................................................82
SERVICE DATA AND SPECIFICATIONS (SDS).........83
General Specifications ...............................................83
Disc Brake .................................................................83
Drum Brake................................................................83
Brake Pedal ...............................................................83
Parking Brake Control ...............................................84
CONTENTS(Cont'd)
BR-2

ABR190
InstallationNBBR0023CAUTION:
IRefill with new brake fluid ªDOT 3º.
INever reuse drained brake fluid.
1. Place master cylinder onto brake booster and secure mount-
ing nuts lightly.
2. Torque mounting nuts.
: 12 - 15 N´m (1.2 - 1.5 kg-m,9-11ft-lb)
3. Fill up reservoir tank with new brake fluid.
4. Plug all ports on master cylinder with fingers to prevent air
suction while releasing brake pedal.
5. Have driver depress brake pedal slowly several times until no
air comes out of master cylinder.
6. Fit brake lines to master cylinder.
7. Tighten flare nuts.
: 15 - 17 N´m (1.5 - 1.8 kg-m, 11 - 13 ft-lb)
8. Bleed air. Refer to ªBleeding Brake Systemº, BR-8.
MASTER CYLINDER
Installation
BR-18